4JRD

Crystal structure of the parallel double-stranded helix of poly(A) RNA

Entity

Entity ID	Chain ID	Description	Type	Chain length	Formula weight	Number of molecules	DB Name (Accession)	Biological source	Descriptive keywords
1	A, B (A, B)	RNA (5'-R(*AP*AP*AP*AP*AP*AP*AP*AP*AP*AP*A)-3')	polymer	11	3576.3	2
2	C, D, E, F, G... (A, B)	AMMONIUM ION	non-polymer		18.0	18	Chemie (NH4)
3	U, V (A, B)	water	water		18.0	76	Chemie (HOH)

Contents of the asymmetric unit

Polymers	Number of chains	2
	Total formula weight	7152.6
Non-Polymers*	Number of molecules	18
	Total formula weight	324.7
All*	Total formula weight	7477.3

*Water molecules are not included.